【摘要】 试验分育雏期与生长期,用以测定聚乙烯聚吡咯烷酮(PVPP)对优质肉鸡的促生长效果。育雏期选用石歧杂黄羽肉鸡3237只,按入孵时的蛋重分为大蛋群与小蛋群。试验鸡在相同的饲养管理条件下按三种处理喂养:(1)对照组喂基础日粮;(2)试验1组为基础日粮+100ppm pvpp;(3)试验2组为基础日粮+200ppm pvpp。42天育雏期的结果表明:在日粮中添加PVPP能提高雏鸡的成活率和饲料效率,以200ppm PVPP组最佳,成活率提高4.2％(大蛋群)和35.2％(小蛋群),饲料报酬提高13.6％(大蛋群)和17.1％(小蛋群)。生长期试验选用石歧杂鸡240只,层笼饲养,试验期4周(49日龄至77日龄),观察添加不同剂量PVPP(0、100、200和400ppm)的饲养效果。结果显示的生产 成绩以添加PVPP各组较好,但组间差异不显著。更多还原

【Abstract】 Polyvinyl polypyrrolidone (pvpp) was evaluated as a growth promotant for chicke-as in two experiments. Experiment 1 using 3237 birds were condueted to test the effect of 100 or 200 ppm dietary pvpp.Birds were brooded on the floor using hover-type brooders from one day-old to 42 day-old.The results indicated that the pvpp at the level of 200 ppm increased the livability by 4.2%~35,2%, and improved feed efficiency by 13.6%~17.1%, Experiment 2 was a growth trial from 49 day-old to 77 day-old chickens, evaluating 100, 200 or 400 ppm dietary pvpp. pvpp slightly improved feed efficiency while increased average daily gain, but The difference were not statistiaiiy significant.更多还原